C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers

C08J2367/06—Unsaturated polyesters

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/00—Stock material or miscellaneous articles

Y10T428/14—Layer or component removable to expose adhesive

Y10T428/1462—Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/00—Stock material or miscellaneous articles

Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Y10T428/2809—Web or sheet containing structurally defined element or component and having an adhesive outermost layer including irradiated or wave energy treated component

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/00—Stock material or miscellaneous articles

Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Y10T428/2852—Adhesive compositions

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/00—Stock material or miscellaneous articles

Y10T428/31504—Composite [nonstructural laminate]

Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Weiter bestand ganz allgemein die Aufgabe, eine Folienbahn herzustellen, die diese guten Eigenschaften vereint und daher für zahlreiche Verwendungszwecke eine überlegene Eignung besitzt. Next was more generally, the task of producing a film web that unites these good characteristics and therefore has superior suitability for a variety of uses.

Nun war bekannt, nämlich von uns früher gefunden worden, daß bestimmte Copolyester nach der Acrylierung Haftklebstoffe ergeben. Now it was known to have been in fact been found by us earlier that certain copolyesters arise after acrylation PSAs.

Folienbahnen hingegen, soweit geeignet als Trägerbahn für Haftklebstoffe, dürfen keine Klebrigkeit aufweisen und müssen in Laminaten für die Herstellung von Etiketten sogar die Eigenschaft der "Blockfreiheit" besitzen, dh bei Ausübung von Druck und erhöhter Temperatur nicht verkleben. Film webs, however, as appropriate as a carrier sheet for pressure-sensitive adhesives, no tackiness may have and even must have the property of "nonalignment" in laminates for the production of labels, that do not stick with application of pressure and elevated temperature.

Es wurde nämlich gefunden, daß klebfreie und nicht blockierende Folienbahnen erhalten werden, wenn die Bedingungen der empirischen Formel des Patentanspruchs eingehalten sind, dh daß mit einer variierenden Bandbreite von +10% der optimale Acrylierungsgrad A opt eingehalten ist. It has been found that non-tacky and non-blocking film webs are obtained when the conditions of the empirical formula of the patent claim have been met, that is A opt is met with a varying range of + 10% of the optimal degree of acrylation.Die größte Abweichung von A opt soll ±25% betragen. The largest deviation from A opt is to be ± 25%.

Kann jedoch eine gewisse Klebrigkeit oder geringere Blockfreiheit in Kauf genommen werden, beispielsweise bei Trägerbahnen mit beidseitigen Kleberschichten oder bei Laminaten der Folienbahn zwischen Metallschichten, so kann auch eine Abweichung von bis zu minus 25% vom Acrylierungsgrad A opt gewählt werden. But can be tolerated a certain stickiness or less non-alignment, such as backing sheets with double-sided adhesive layers or laminates of the film web between metal layers, including a deviation of up to minus 25% of acrylation A opt can be selected.

Für die Hersteller von Etiketten haben die Folienbahnen den besonderen Vorteil, daß die Folienbahn auf einer geeigneten Unterlage durch flächige Ausbringung der strahlenhärtbaren acrylierten Copolyester vom Hersteller der Etiketten hergestellt werden kann. For a manufacturer of labels, the film webs have the particular advantage that the sheet can be produced on a suitable substrate by extensive application of radiation-curable acrylated copolyester by the manufacturer of the labels.Selbstverständlich ist auch getrennte Her stellung und Lieferung der Folienbahn als strahlenge härtete Trägerbahn möglich. Of course, also have separate Her and supply the film web as possible bright close hardened carrier web.

In entsprechender Weise werden die in Tabelle II genann ten acrylierten Polyester mit dem Acrylierungsgrad A 50, A 60 und A 80 mit entsprechenden Mengen des Addukts, be rechnet auf die jeweilige OH-Zahl des Polyesters, herge stellt. Likewise, the referred to in the Table II acrylated polyesters with the degree of acrylation A 50, A 60 and A 80 with appropriate amounts of the adduct are be credited to the respective OH number of the polyester is Herge.

6. Verwendung der Folienbahn nach einem oder mehreren der vorhergehenden Ansprüche 1 bis 5 als Trägerbahn für einseitige oder beidseitige Kleberschichten. 6. Use of the film web according to one or more of the preceding claims 1 to 5 as a carrier web for one or both sides adhesive layers.

7. Verwendung der Folienbahn nach Anspruch 6 als Trägerbahn für Schichten aus einem Haftklebstoff für die Herstellung von Etiketten. 7. Use of the foil web according to claim 6 as a carrier web for layers of a pressure-sensitive adhesive for the production of labels.